Wire-rod-bending machine.



M. J. BARTLETT.

WIRE ROD BENDING MACHINE.

APPLICATION FILED JULY 18, 1907.

Patented Sept. 15, 1908.

I? SEE HWY M; J. '-BARTLETT. WIRE BOD BBQ-{DING} MACHINE, Al rmouxonrnnn JULY 1a, 1907. 898,424. Patented Sept, 15, 1908. V anus-51mm 2;

M. J. BARTLETT.

WIRE ROD BENDING MACHINE.

APPLICATION FILED JULY 18, 1907.

Patented Sept. 15, 1908.

7 SHEETS-SHEET 3.

" llu/e nio M. J. BARTLETT. WIRE ROD BENDING MACHINE.

APPLIOATION FILED JULY 18, 1907.

Patented Sept. 15, 1908.

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M. J. BARTLETT. WIRE ROD BENDING MACHINE. APPLICATION FILED JULY 18, 1907.

Patented Sept. 15, 1908.

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M. J. BARTLETT.

WIRE ROD BENDING MACHINE. APPLICATION FILED JULY 18,1907.

898,424. Patented Sept. 15,1908.

7 SHEETS-SHEET 6.

lm w Kt T Wm M. J. BARTLETT.

WIRE ROD BBNDIN G MACHINE.

APPLICATION FILED JULY 18, 1907.

Patented Sept. 15, 1908.

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WIRE-ROD-BENDING MACHINE.

Specification of Letters Patent.

Patented Sept. i5, 1908.

Application filed July 18, 1907. Serial No. 384,453.

To all whom it may concern:

Be it known that l, i\l.\ncfls .losuu vBAn'r- Ln'r'r, a citizen of the United States, and a resident of (hicago, in the county of (ook and State of Illinois, have invented certain new and useful Improvements in Wirediod- Bending l\lachincs; and I do hereby declare that the following is a full, clear, and exact description thereof, re'l'crem-e being had to the accompanying drawings, and to the figures and letters of reference marked thereon, which form a part of this specification.

This invention relates to impro\ 'ements in machines for bending or giving shape to wires or rods to form parts or members of Wire furniture, as twisted rod chairs, tables and the like, and the invention consists in the matters hereinafter set forth and more particularly pointed out in the appended chums.

Among the principal objects of my invention is to provide an improved mechanism for forming eyes on the ends of rods shaped to produce members for making wire furniture, or for other purpose.

A further object of my invention is to provide an improved machine for bending or shaping a wire or rod to constitute a chair back member.

As shown in the drawings: Figure 1 is a plan view of the machine embodying my invention. Fig. 2 is a similar view of the parts shown in dill'erent positions. Fig. 3 is a front elevation thereof. Fig. 4 is a longitudinal, vertical section taken on line 4-4 of Fig. 1. Fig. 5 is a section taken on line -5 of Fig. 3. Fig. 6 is a vertical section taken on line 6-6 of Fig. 3. is a detail horizontal see- Fig. 1 tion taken on line 7-7 of Fig. 3. Fig. 8 is a detail horizontal section taken on line 88 of Fig. 3. Fig. 9 illustrates a lever and its mounting which cooperates with one of the wire bending forms. Fig. 10 is a fragmentary perspective view of a portion of said lever. Flg. 11 is a section taken on line 1111 of Fig. 9. Fig. 12 is a detail of the jointed end of the lever shown in Fig. 9. Fig. 13 is a perspective view of two of the bending forms removed from the machine. Fig. 14 is a detail section taken on line 14-14 of Fig. 1. Fig. 15 is a perspective View of a lever for operating one of the principal forms of the machine. Fig. 16 is a horizontal section taken on line 1616 of Fig. 17 illustrates one of the halves or members of a chair back which the machine is designed to form. Fig. 18 is a top plan view of a legtwistingmachine,showing my improved eye forming mechanism attached thereto.

The chair back member which my machine is designed to produce is shown in Fig. 17 and consists of a single piece of wire rod formed to provide a straight. side (1 a long curved portion I), a straight portion 0, a shorter curved portion (Z, a straight oblique portion 0, a shorter straight portion 7, a curved portion g, and a terminal eye it. The particular shape of the member herein shown is used in making the chair back shown in my U. S. Design .Letters Patent Number 38,279, dated October 9, 1906.

Referring now to the construction of the machine, 20 designates, as a whole, the main or supporting frame of the machine supported on legs or stainlards 21, and 22 designates a horizontal work table supported on or constituting the upper part of an auxiliary frame 23 mounted on the main frame.

25 designates a form mounted above the work table 22 and pivoted thereto by means of a stud 26 (Figs. 1, 2 and 14). Said form is provided with a curved margin 27 about which one end of the rod is bent or curved.

28 designates a stationary form fixed to the upper face of the work table in advance of the form 25 and provided with a curved edge 29 and a straight edge 30 about which the rod is bent.

31 designates a third form mounted on a body or shank 35 which is pivoted to its support to swing the form 31 towards and away from the work table. Said form 31 is provided with a curved margin about which a part of the rod. is bent or curved. Between the latter form 31 and the form 28 is located a short grooved form block 34 having a short straight groove to give form to a portion of the rod, and constituting also part of a clamping device to hold the rod fixed in place.

36 designates, as a whole, an eye-forming mechanism which forms the eye at the end of the rod after the same has been bent to shape.

In the operation of forming or bending a rod into the shape shown in Fig. 17, a straight wire rod is inserted into the machine between the pivoted end of the form 25 and the curved margin of the stationary form 28, and said rod extends at its advance end into engagement with a stop 40 carried by the end of an oblique arm 41 extending from the machine. Thesaid rod is engaged at a point adjacent to the pivoted end of the form 25 by the sharpened end of a pivoted holding pawl 43 which prevents endwise withdrawal of the rod. Thereafter the rear or free end of the rod is gras ed by the hand and is bent about the curved margin 27 of the form 25 to the position indicated in dotted lines in Fig. 1 and full lines in Fi 2, thus forming the curved portion 1) an the strai ht portion a of the chair back member. The partially formed rod is locked in this position by means of a swinging latch 45 hinged to the form 25 and adapted to swing downwardly into engagement with the rod lying a ainst the curved mar in 27 of said form. The form 25 is prevente from swinging inwardly during this operation by means of a latch 46 hinged to the free'end thereof and adapted to bear against the end margin of the work table 22,

as best shown in Fi s. 1, 2 and 4.

The next part 0 the bending operation consists in bending the advance end of the wire rod about the curved margin 29 of the stationary form 28 and against its straight margin 30 thereof, into the position indicated in dotted lines in Fig. 1 and in fulllines in Fi 2, thus forming the shorter curved part of said member and the straight obique portion 'e thereof. This is effected by means of a lever 50 carrying a bearing roller 51 which latter is adapted, when the parts are in position for producing this bend, to lie on the side of the straight rod remote from the curved portion 29 of the form 28 as shown in Figs. 1 and 4; and said lever and the rollers carried thereby are thereafter swung horizontally on a vertical axis concentric with said curved margin 29, the roller 51 dpressing.

and curving the rod against the sai curved margin 29 of said form 28. Said lever 50 and the manner of carryin the roller thereby is specially constructe to permit both the lever and the art carrying the roller to be swung upward y out of the way of the other operative parts of the machine in the position shown in Fig. 9. Said parts are made as follows, reference being made to Figs. 4, 9, 10, 11 and 12: 52 designates a rotative ivot block for the lever; rovided with a s eeve or hub 53 which exten s downwardly throu h openings in the form 28 and the work table 22 and has rotative bearing therein. It is secured in place by a nut 54. The lever is provided with two fork arms 55, 55 which fit on o posite sides of said block and are apertured to receive a ivot. in 56 extending through said block. The bibck is provided on its upper face with an upwardly opening groove or notch 57 adapted to receive an arm 58 whichcarries the roller 51, said arm being pivoted in the rear end of the groove by a pivot pin 59. The said roller arm occupies said groove when in its operative position, as shown in Fig. 4. The fork arms 55 of said lever 50 are provided at'their upper sides with inwardly extending flanges 60, 60, herein shown as formed on angle pieces 61 that are attached to the outer faces of said form arms, and'the downwardly facing surfaces of said flanges are adapted for engagement with the s uare sides or faces of lugs 62, 62 formed on t e opposite side faces of the roller arm 58. The pivot block and its hub is made hollow and receives the upper end of a spring-pressed rod 63. Said rod 63 is pressed upwardly by means of a spiral contractile spring 64 attached to the lower end of the rod and to a part 65 dep'endin from the work table 22. he said upper end of the spring-pressed rod is pointed as shown and engages a notch 66 in the lower margin of the roller arm 58. When the parts are in the position shown in Fig. 4, the engagement of the lugs 62 with the flanges 60 of the lever arms holds the roller arm in alinement and rigid with the lever 50 so that at this time there is no danger of the lever arm swinging upwardly when the rod is formed around the margin 29 of the stationary form 28. When said parts are not used it is desired to throw the same upwardly in the position shown in Fig. 9. To do this, the lever 50 is first thrown upwardly, to swing the flanges 60 away from the lugs 62, after which the roller arm is free to be swung upwardly to the position shown in Fig. 9. As the roller arm swings upwardly another pair of the side faces of the lugs 62 engage with the flanges 60. At this time the spring 64acts through the rod 63 to hold the roller arm upwardly and the engagement of the flanges 60 with the lugs 62 acts to hold the lever in its upper position. f

The grooved form 34 stands normally above the level of the work table, but must be depressed to permit the rod, as it is swung against the straight side 30 of the form 28, to engage the same. The notched form is pivotally mounted so that it may be brought parallel with the straight side of the form 28, and is thereafter swung partially round to bend the part f of the chalr back member at an angle to the art e.

The rooved orm 34 is formed on the upper en of a shank 70 (Figs. 3 and 13) provided at its sides with a ertured lu s 71, 71 adapted to engage wit a vertica pin 72 fixed in the auxiliary frame, the parts being so arranged that the in 72 constitutes a vertical guide for said orm and a hinge about which the form swings. The construction associated with said grooved form whereby it is lowered to receive the rod as the latter is bent around the stationary form is made as follows: The slotted form 34 is held normally in its u permost position through the medium of a iimged cam lever 80 which engages a bearing block 81 on which the lower end of the shank of the form rests, said block seam ha uidin mentwith the frame 20 l$ m eans 5f $32 531 parallel pins 82 ening suitable guide openings in said frame. Tl fe end of said cam lever 80 is hinged to a vertically reciprocating link 83 which latter is loosely connected at its lower. end with a vertically swinging treadle bar 84 which is hinged to a horizontal rod 85 extending between thelegs of the frame. The said link and the treadle bar is held normally in its uppermost position by means of a spiral contractile spring 86 attached at its upper and lower ends to pins or lugs on said link and machine frame, res ectively (Figs. 3 and 5. When the treadle bar 84 is depressed, therefore, it lowers the link 83 and thereby swings the cam 80 into a position to permit the grooved for-m to'dro by gravity flush with the u per face 0 the work table.

Thereafter t e rod 'is swung over the depressed grooved form, as indicated by the dotted line positibn in Fig. 1. Thereupon the treadle bar 84 is released and the spring 86 returns the link 83 to its uppermost position and acts through the cam 80 to raise the ooved form to the position shown in Fig. 3. order to hold the rod being bent in said grooved form, a short bar 90 is attached to the work table and projects over one end of said grooved form in a manner to permit the rod to pass thereunder when the form is depressed, but" prevents the rod rising from the grooved form after the latter has been raised.

After the rod is thus engaged with the grooved form, said form is swung inwardly towards the work table about its hinge pin 72 to the position shown in Fig. 2 to produce the short straight bend f. This is effected through the medium of a lever bar 92 which is adapted to be inserted into a suitable opening in the outer face of the shank of said grooved form, said bar being preferably removable in order that the same may be moved out of the way of the operator when not in-use. The treadle bar 84 may be locked in its lower position to hold the grooved form 34 depressed by means of an arm 93 extending laterally from a standard 94 rising from the machine base at one side of said treadle bar; said treadle bar being connected with the pivot shaft or rod 85 by a joint permitting of sufficient lateral play of the treadle bar'to allow said bar to be shifted beneath and away from said arm 93. A

stop arm 94 at the top of said standard 94 with an o ening 98, as shown in Fig. 13, that v .eye forming mechanism which constitutes an important feature of my invention and which will now be described, reference being made more particularly to Figs. 1, 2, 3, 4, 6 and 8.

100 designates a horizontal rotative disk that is mounted between the work table 22 and a plate 101 of a bracket 102 beneath the rear end of the work table. Said disk is provided on its u per face with a centrally located circular lhg or projection 103 that extends u Wardly through a slot 104 in the work ta 1e. The disk 1s also provided on its lower side with a hub 105 which extends downwardly through a slot 106 in the lower bracket plate 101, said slot 106 being parallel with and beneath the slot 104. Nonrotatively fixed to said hub below the plate 101 is a ratchet wheel 107 adapted to be engaged by a spripg-pressed pawl 108 carried by a lever 109 having a flattened inner bearing end 110 that is rotatively mounted on the hub below said ratchet wheel. Said ratchet wheel and the bearing end of the lever are fixed to the hub by means of a collar 111 that is removably attached to the lower ipnd of the hub, as by the set screw shown in T12 designates a vertically movable pin that extends upwardly through an opening in the disk 100 and its hub, with its upper end normally above the upper face of the central projection 103 of the disk. The lower end of said pin carries a head 113 which rests on a vertically swinging lever arm 11 4 that is pivoted at 115 to the machine frame. Said lever arm 114 is adapted to be lowered through the medium of a link 116 pivoted at its upper end to the lever arm and at its lower end to a treadle bar 117 (Figs. 6-and 16). The lever arm 114 is normally held in its uppermost position to project the upper end of the pin 1 12 above the disk 100 through the medium of a spiral contractile spring 119 which is fixed at its lower end to a lug 120 on the, treadle bar link and at its upper end to the machine frame in the manner shown in Fig. 3. A sto 122 fixed to the machine frame engages t e lever arm 114 to limit the upward movement of the lever 114. When said lever arm is depressed the weight of the head at the lower end of the center in 112 serves to lower the latter so that the rec end of the rod at the terminal of its newly formed curved portions g may pass thereover. In order to shifting o the lever bar 114 when said pin is at its lowermost position, I have provided a retaining device 123 consisting of a forked arm which is attached to the upper side of the lever arm 114 in position for the arms thereof to pass on either side of said pin when confined between the center pin and the eecentric lug 125. It will be noted that the cocentric lug 125 is formed to provide ad'acent to the center pin a shar biting edge. hen the end of the wire is t ius confined between said eccentric lug and center pin, the disk is turned in the direction indicated by the ar-.

row in Figs. 1 and 2 through the medium of the pawl and ratchet mechanism described. By reason of the biting engagement of the biting edge of said eccentric lug with the end of the wire rod, the rotation of the disk in this manner serves to curve the end of said wire in the form of an eye. Inasmuch as the parts of the rod which have been bent in the manner hereinbef ore described are at this time firmly held engaged with the different forms, the said rod is immovable endwise so that the eye forming mechanism described, comprising the disk 100, centering pin 112 and eccentric lug 125 travels along or toward the rod during the formation of the eye, such movement of the mechanism being permitted by reason of the presence of the slots 104, 106. This operation of the eye forming mechanism is shown more plainly in Fig. 18 wherein the machine is shown adapted for forming the eyes on the ends of the members of a twisted leg, one of the eye-forming mechanisms of that machine being shown in the position which it assumes after the eyehas been completed and the other mechanism being shown in the position it occupies before the formation of the eye is begun.

The eye-forming disk and parts associated therewith are returned to normal positions after the eye has been formed and the back member removed by devices made as follows: 130 designates a horizontally and longitudinally reciprocating guide bar that engages suitable guides in the auxiliary frame in the manner best shown in Figs. 4, 6 and 8. Said guide bar is provided with a laterally and inwardly directed arm 131 that engages the periphery of the disk 100 on the inner side thereof. 132 designates a spiral contractile spring that is attached at one end to a pin 133 fixed to the auxiliary frame and at its other end to a pin 134 which extends through a slot 135 in the side member of saidframe and is fixed to the inner end of the guide bar. The eye forming mechanism is thus moved against the action of the spring 132, and the power stored in said spring has the effect,

see- 24 when the formed rod is lifted from the machine, to return the traveling eye forming mechanism to its outermost or normal posltion.

140 designates a swinging gage bar (Figs. 1 and 2) that is located in position to arrest the eccentric lug 125 of the eye forming disk at the proper place to adjust it for engagement by the end of the rod on which the next eye is to be formed. When said e e forming mechanism is returned by the spring 132, the disk is rotated by the handle 109 or otherwise until one of the flat faces of the lug 125 is brought up against the gage bar which properly gages or places said lug. The said gage bar is spring pressed against a suitable step 141 to hold it in position for its end to extend across the disk while permitting the end of the bar to swing outwardly so as to allow the lug 125 to rotate past the same. A spring '142 holds the gage bar normally against said stop.

It is desired that the treadle bar 117 be locked in its lowermost position when it is swung downwardly to permit the center pin of the eye forming mechanism to drop in order that said pin will remain in its lowermost position while the end of the wire rod is being swung over the disk against the eccentric lug 125. This may be effected by mechanism herein shown made as follows: 145.

designates a standard risin from the base of the machine at the side of t e treadle bar 117 and is provided with a lug 146 which extends laterally towards said treadle bar. The pivotal connection of the treadle bar with the shaft 85 is sufficiently loose to permit the treadle bar when depressed below said lug 146 to be shifted inwardly beneath the same, thereby holding the treadle bar downwardly against the action of the spring 119.

As herein shown, means are provided for. automatically releasing the treadle bar and permitting the center pin of the eye forming mechanism to move upwardly under the action of said spring 119 just after the 'end of the wire rod has passed over the eye forming. disk into contact with the eccentric lug 125. This result is effected in the present instance by devices made as follows: 148 designates a vertical rock shaft that has bearing at itslower end in the lateral arm 146 of said standard 145 and an upper arm 149 thereof, and has bearing at its upper end in a sleeve 150 formed on the auxiliary frame, as shown in Fig. 6. The said vertical rock shaft 148 is provided at its lower end with a cam iece.

151 which is adapted, upon rotation: o the rod in the proper direction, to be swung against the treadle bar 1 17 and disengage the same from the lug 146. The means for rocking said shaft 148 to produce this result con-' sists of a crank'arm 152 at the upper end of the shaft (Figs. 1 and 7) which is adapted for engagement by the "body or .shank of the indicated in in swinging form 31' as the latter is swung inwardly.

After the eye has been "formed in'the end ofthe rod, in the manner described, the form 25 is swung on'its lpivot lugs 26 from the position i lines in Fi s. 1 and 2 to that indicated in dotted lines in i .2 to complete the chair back member. '1 is is convenientl y etl'eeted by means of a lever 160, shown in place in Fig. 2, and shown removed from the machine in Fig; 15.. This lever is preferably arranged to e removed from the form when not, in use so that it will be out of the we. of the operator. It is rovided at one on with a hand grip 161 am at its other end with a short lateral y directed rigid arm 162. Said arm is rovided on its u per face with a short pin or ug 163 that is [Lt apted to engage with an oblique notch 164 on a plate or bar 165 fixed to the upper face of said swinging form 25. The said late or bar 165 is separated from the swinging form 25 at its free or unattached end so as to permit the inner end of said lever 160 and its arm 162 to mss between the plate and bar, as indicated in dotted lines in Fig. .2. The free end of said arm carries a roller 166 that extends beneath the plane of the lower face of said arm and is adapted, when the lever'is liked to said swinging 101'111 in the manner described, to engage a part of the rod which lies against the marin 27 of said swinging form. The lever 166 is locked to said swinging term by means of a latch 167 which is pivoted between its emls to said lever by means of a horizontal pivot pin 168. The latch is provided at its mner end with a tlat horizontal portion 16%) provided with an aperture 176 which is designed for engagement with a stud 171 projecting upwardly from the upper face ol' the swinging form 25. The said latch is provided at its outer end with a llat portion 172 between which and a part of the lever'is interposed a spiral expansivcly acting spring 173, said s ring serving to hold the latch engaged with the stud 171 When the lever is thus engaged with the swinging term .25 (Fig. .2) it constitutes means whereb the swinging form-may 'be swung from t to full line position shown in Fig. 2 to the dotted line position shown in said Ii ure, the latch 46 being released to permit the form to thus swing from one iosition to the other. Al'ter said form has thus been swung into this )osition and carries the straight portion a of the back member into the position imlicatml in dotted lines in Fig. .2, the said back member is tiuished and is ready to be removed from the machine. Bel'oresaid back member is removed from the machine, the lever 166 lsdetached from the swin ing form 25 and the lever 56 and the roller bearing arm 58 carried thereby are raised into the position shown in Fi 6. 'lhereafter the grooved form 34 is depressed, after which the back member may be shifted rearwardly to disengage the same from theyarious parts of the machine. In order to positivel disengage said rooved form 34 from the i' ormed back mom er, the treadle bar link 83 is provided at its up or end with a forwardly extending lug 186 (i ig. 3) that is adapted for engagement, when the treadle bar 84 is do iressed to its lowermost position, withan ol set arm 1S1 liked to the shank or body of the grooved form and thus pull said form downwardly. The said arm 181 is continued on the side of the shank of the grooved i'orm remote from the link 83 and is provided at its end with an adj ustab'le stop screw lhll-which engages a stationary part of the machine when the said 'l'orm memier is swung into position to bring the groove parallel witi the straight portion so of the stationary form and tlms constituting a stop to arrest said grooved form in this position.

In Fig. 1b of the drawing l have shown my improved eye 'l'orming mechanism as made a part of a machine for 'l'orming the twisted legs of chairs, tables and the like. in said ligure said eye 'l'orming mechanism is desig nated as a whole by 1,6 and is the same construt-.tion as the eye l'orniing mcclumism hereiubel'ore described. luv this construction two eye forming mechanisms are shown for 'l'ormim eyes on both. and members of the twisted rod leg, both. ol' said eyes helm 'l'ormed while the leg occupies a single llXUt position, and alter the members have been twistedtogether. Said machine embraces as the main parts thereon, a frame it) provided with a suitable work table llll on which. are mounted the supports 11);, 1!).3 for the two cye'l'orming mechanisms. 16;; desi nates a twistim heat l for twisting the loop of tile wire from Wlll('-ll. the twisted leg is formed, said twisting head being operatiul from any suitable source of power. Inl designates a clamp for holding said wires in their parallel positions between which clamp and the twisting head thewircs are twisted together. 195, 165 designate statiomiry forms located between said clamp HM and the eye forming mechanism. outwardly against which the ends of the wires, in which. are formed the eyes, are curved or bent in diverging relation proparatory to the eye l'orming operation.

n important l'cature of my improved machine lies in the eye l'orining mechanism so constrm'lcd and arranged that an eye may be termed in the end o'l' a rod at a time when the rod is being held rigid l'rom endwise move ment. 'lhis is made possible by reason of the fact that the eye l'orming nierlnmism is 1novable along the le-ngtho'l' the wire rod during the 'l'ormation ol' the eye, thus rendering it unnecessary that the rod shall move towards the eye at this time. 'lhis l'cature of my invention is capable of use whenever it is desired to form an eye at the end of a rod while it is held in a fixed position. A further adsame.

A machine organized in the same general manner as thatherein illustrated may be emloyed for' forming furniture members and ke pieces somewhat. different from that herein shown and I do not wish to be limited to the structural details illustrated except as I herein made .the subject of specific claims.

I claim as my mvention:

. 1. In a wire rod bending machine, means for holding a rod in fixed position, and mechanism for forming an eye on the end of the rod when so held, said mechanism being movable along the length of the rod during the formation of the eye. I v 2. In a wire rod bending machine, means for holding a rod in fixed position, and an eye forming mechanism comprising a art engaging the end of the rod, said part eing rotative on its axis and movable along the length of the wire.

}3. In a wire rod bending machine, means for holding a rod in fixed position and an eyeforming mechanism comprising a rotative part provided with a center pin and with an eccentric lug between which the rod is held, said part being movable along the length of the wire, for the purpose set forth. 4. In a wire rod bending machine,- means for holding a rod infixed position, and an eyeforming mechanism comprising a rotative part provided with a center pin and with an eccentric lug between which the rod is held, and means whereby. said pin is movable to lower it below the upper face of said rotative part, said part being movable along the length of the wire, for the purpose set forth.

5.'In a wire rod bending machine, means for holding a rod in fixed position, and an eye-forming mechanism comprising a rotative disk, a sup ort therefor which is slotted to errnit the isk to move endwise of the ro means for rotating the disk, a vertically movable center pin extending upwardly through an opening in said disk, an eccentric lug risin fromthe disk between which and the raise center pin the end of the rodis held, and means for normally holding the pin with its end raised above said disk constructed to ermit the in to drop with its upper end elow said 'sk.

6. In a Wire rod bending machine, means for holding a rod in fixed position, and an eye forming mechanism comprising a rotative part provided with a center pin and with an eccentric lug between which the rod is held,

said eccentric'lug' being provided with a biting edge adapted to engage the rod, and

means whereby said rotative part is movable along the length of the wire.

7. Ina wire rod bending machine, means for holding a rod in fixed position, and an yeforming mechanism comprising a rotative disk provided with means for engaging the end 0 the rod, pawl and'ratchet mechanism for rotating the. disk, and means whereby said disk is movable along the length of the wire during its rotation.

' 8. Ina wire rod bending machine, means for holding a rod in fixed position, and an eye forming mechanism comprising a rotative disk provided with means to engage the end of the rod, and a guide for the disk arranged to permitthe disk to move lengthwise of the rod during rotation of the disk.'

9. In a wire rod bending machine, means for holding a rod in fixed osition, and an eye forming mechanism embracing a rotative partprovidedvwith means to engage the end of the rod, a slotted support for said rotative part arranged to permit said part to move endwiseof the rod, and means for rotating saidpart.-- v p q;

. 10. In a. wire rod bending machine, means for holding a rod in fixed position, and an eye forming mechanism comprising a rotative disk," a sup ort therefor which is slotted to perinit the isk to move endwise of the rod, a

"hub on-said disk, aratchet wheel fixed to said hub, a lever having bearing onsaid hub and carrying a pawl which-engages. the

ratchetwheel for rotating the disk, said disk being provided in its upper face withmeans for engaging and holding the end of said rod.

11. In a wire rodbending machine, means for holding a rod in fixed position, and an eye forming mechanism comprising a rotative disk, a supporting frame slottedto permit the disk-to move endwise of the'rod, .a vertically movable center pin normally projecting above the face of the disk, an eccentric. lug on said disk between which and the center pin the end of the rod is held, means for rotatmg said disk, and a gage for adjusting the position of said eccentric lug.

12. In a wire rod'bending machine, means for holding a rod in fixed position, and an eye forming mechanism comprising a rotative disk, a supporting frame slotted to permit the disk to move endwise of the. rod, a vertically movable center pin normally projectingv above the face of the disk, an eccentric lug on said disk between which and thecenter pin the end of the rod is held, means forrotating said disk, and aswinging gage bar rojecting over said disk into the path of sai eccentric lug, for thepurpose set forth.

13. In a wire rod bending machine, means for holding a rod in fixed position, and an eye forming mechanism. comprising a rotative disk provided on its upper face with means for on agin the rod, constructed upon relation of the i lsk to form the eye, means whereby said disk is moved along the ion th of the rod during the rotation of the isk, and

means for restoring the disk to its normal position.

14. In a wire rod bending machine, means for holding a rod in fixed position, andan eye forming mechanism com n'ising a rotative disk provided on its upper lace with means for engaging the rod, constructml upon rotation of the disk to form the e o, means whereby said disk is moved along the length of tho rod during the rotation ofthe disk, and automatic means for restoring the disk to its outer position. i

15. In a wire rod bending machine, means for holding a rod in fixed position, and an eye forming mechanism comprising a rotative disk provided on its upper surface with a concentric and an eccentric pro'ection between which the end of tho rod is hoid, means for retating the disk, a slotted support for the disk permittingthe disk to move endwise of the rod during the rotation thereof, and a spring a ntinst tho action of which tho disk is moved a ong tho length of the rod, said spring acting to restore the disk to its normal position.

16. An eye forming mechanism comprising a rotativc disk rovided on its upper face with means for lolding tho end oi a red, a support therefor aml means for rotating the disk, andguiding connections between tho disk and sup )ort arranged to permit the disk to be moved lengthwise of tho rod during rotation of the disk.

17. An eye forming mechanism comprising a rotative disk, means for rotating the disk, a support therefor, guiding connections between the disk and support arranged to wemit the disk to be moved along the length of the rod during the rotation of the disk, a pin extending from the disk centrallv thereof and a concentric lug extending from sah disk between which and the pin the end of the rod is held.

18. An eveformingmechanism comprising a rotative disk, means for rotating the disk, a support therefor, guiding connections between the disk and support arranged to we mit the disk to be moved along the length of the rod during the rotation of the disk, a pin extending from the disk centrally thereof, and a concentric lug extending from said disk between which and the )in the end of the rod is held, the center pin being movable to shift the same out of the plane of the face ofthe disk.

19. An eye forming mechanism com prisin a rotative disk, a sup )ol't therefor, sletter connections between the disk and support ermitting the disk to be moved along the iimgth of the rod, means on the u )por face of the disk for engaging the end 0 the rod to ism for rotating said disk. I

20. A machine i'or making wire rod furniture members and the like'from wire rods and forming an eye thereon, comprisin stahold the same, and pawl and ratchet mechantionary and movable forms about whic the ortion of the rodis the rod is bent, means for forming t 9 rod about the curved and straight surface of the stationary form, a swinging form located at the advance end of the straight surface of said stationary form and provided with an upwardly opening groove to receive the rod intermediate part of its length, and a swinging form located in advance of the grooved form and provided with a curved surface adapted to form. I

22. In a machine for forming furniture members or the like from straight wire rods comprising a swinging form having a curve surface aboutwhich a portion of the rod is bent, a stationary form having a curved and straight surf ace about which another art of the rod is bent, means fo1"i'or1ning t e rod about the curved andstraight surface of the stationary form, a swinging form located at the advance end of the straight surface of said stationary form and provided with an upwardl opening groove to receive the rod interme iato part of its length, a swin ing form located in advance of the grooved orm and provided with a curved surface adapted to bend the end of the rod 'in curved form, and an eye-forming mechanism located in advance of the latter swinging form to form an eye in said rod member.

.23. A machine for making furniture members and the like from a continuous wire rod, comprising a work table, a form pivotally mounted thereon and provided with a curved surface about which one end of the wire is formed, a latch engagim the rod to lock it to said curved surface o" the form, an operating lever provided at its end with a he adapted to enga e a notch in a wart carric by said form, am a latch. carried by the lever adapted to engage a ing carried by the form at a distance rem said notched part, whereby the lever is detachably fixed to the form and other wire bending forms located e11 said table in advance of said pivoted form for giving shape to the other end of said wire rod.

24. in a machine for making furniture members and the like from continuous wire rods, the combination with a work table, of a .l1(l the end of the rod in curvedstationary for n1 having curved and straight surfaces, and a lever swinging on an axis concentric with said curved surface of the stationary fornr for forming the wire rod about said curved and straight surfaces of said form, and forms for finishlng the bending of the latter end of the rod.

- 25. In a machine for making furniture members'and the like from continuous wire rods, the combinationwith a work table, of a stationary form havlng curved and straight surfaces, and a lever swinging on an axis concentric with said curved surface of the stationary form for formin the wire rod about said curved and straig t surfaces of said form, and forms for finishing the bending of.

the latter end of the rod, saidswinging lever beinggrovided with a roller which engages the ro to form the same about the curved surface of said stationary form, said lever and the part carrying the roller being jointed to permit the roller and the lever to be swung upwardly as and for the purpose set forth.

26.. In a machine for forming furniture members and the like from continuous wire poseset forth.

27. In a machine for forming furniture members and the like from continuous Wire rods, the combination with a work table, of a curved form about which one end of the rod is bent, a stationary form provided with. a

curved and a straight surface about which the other end of the rod is bent, a swinging" grooved form adapted to receive said latter end of the wire and to bend a portion of said latter end of the wire at an angle to the part which is formed against the straight portion of the stationary form, said grooved form being vertically movable, and a. part overhanging said grooved form for holding the rod engaged with said form while permitting the rod to pass thereunder for engagement with said grooved form.

In testimony, that I claim the foregoing as my invention I allix my signature in the resence of two witnesses, this 26th day of une MARCUS JOSIAH BARTLETT. Witnesses:

W. L. HALL, Josnrn SILVERMANN. 

